* Bugfix CORE-1713 Distinct with blob fields Contributor(s): Dmitry Yemanov &lt;dimitr at firebirdsql.org&gt; Note(s): This change restores the legacy behavior of DISTINCT / UNION / GROUP BY and ORDER BY operations. Please beware that they may produce incorrect result set, because the ordering / distinct is performed using blob IDs instead of the blob contents. It implies that changes CORE-859 and CORE-1530 are rolled back.